LM4663 - 2.5 W Stereo Class D Audio Power Amplifier [Life-time buy]
Datasheet Packaging Samples & Pricing Reliability Knowledge Base

Features
•Delta-sigma modulator.
•Two stereo input selector.
•"Click and pop" suppression circuitry.
•Micropower shutdown mode.
•24 lead TSSOP package (No heatsink required).
•Stereo headphone amplifier.

Key Specification

PO at THD+N = 1%

2.1W (typ)

THD+N at 1kHz at 1 Watt into 4 (Power Amp)

0.2% (typ)

Efficiency at 2 Watt into 4

83% (typ)

Efficiency at 250mW into 4

69% (typ)

Total quiescent power supply current

22mA (typ)

Total shutdown power supply current

2µA (typ)

THD+N 1kHz, 20mW, 32 (Headphone)

0.15% (typ)

Single supply range

4.5V to 5.5V

General Description

The LM4663 is a fully integrated single supply, high efficiency Class D audio power amplifier solution. More...


Applications

•Portable computers
•Desktop computers
•Multimedia Monitors
  Typical Application
*click for larger image


  Block Diagram
*click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM4663 Boomer ® Audio Power Amplifier Series 2 Watt Stereo Class D Audio Power Amplifier with Stereo Headphone Amplifier 1007
Kbytes		 13-Apr-06 Download
LM4663 Boomer ® Audio Power Amplifier Series 2 Watt Stereo Class D Audio Power Amplifier with Stereo Headphone Amplifier (Japanese)
 1128 Kbytes   Download

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Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
Format
TypePinsSpec.MSL
Rating		Peak
Reflow		RoHS
Report		CAD
Symbols		WeeksQtyQty$US each
LM4663MTTSSOP24NOPB1260RoHS Download Lifetime buyN/A
 
Buy Now 		1K+$1.52rail
of
61		NSUZXYTT
LM4663MT
12 weeks500

Obsolete Versions

Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
LM4663MT
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009

General Description

The LM4663 is a fully integrated single supply, high efficiency Class D audio power amplifier solution. The LM4663 utilizes a continuous time delta-sigma modulation technique that lowers output noise and THD when compared to conventional pulse width modulators.

The LM4663 also features a stereo headphone amplifier that delivers 80mW into a 32 headset with less than 0.5% THD. The LM4663 has two stereo inputs that can be selected to drive either the headphone amplifier or the Class D amplifier. All amplifiers are protected with thermal shutdown.

In standby mode, the LM4663 draws an extremely low 2µA supply current. With a 4 load, the IC's efficiency for a 250mW power level is 69%, reaching 83% at a power level of 2W. The IC features click and pop reduction circuitry that minimizes audible popping during device turn-on and turn-off. The LM4663 is available in a 24-lead TSSOP package, ideal for portable and desktop computer applications.

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM4663MTCMOS70184060010890004309006723

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


[Information as of 8-Nov-2009]